| http://www.w3.org/ns/prov#value | - In the portion 1A, reference numeral 11 is a central processing unit (CPU); 12 is a main memory; 13 is an input/output port that connects the computer 1A to such peripheral devices as a printer and a modem; 14 is an external memory interface for exchanging data with an external memory 3, to be described later; 15 is an input unit interface through which input control commands are provided from an
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